For those of you who have searched for cushions - is it easier to find squareish cushions? I really want to locate a rectangular 3.5 -4.ct. stone, and I have been looking online and at a few B&M''s. I do plan on visiting Mark with Engagement Rings Direct in NYC this summer. But is it hard to find a modern brilliant cushion, rectangular? Are they few and far between? Sometimes I feel like I am looking for a needle in a haystack. The ones I have seen, have had something wrong with them - errr!